Collar drill bushing DIN 172 form A, bore 25 mm, length 45 mm, collar 39 mm, hardened steel

The collar drill bushing with a 25 mm bore comes in the long series at 45 mm. Its case-hardening steel at 740 ± 80 HV 10 withstands contact with the cutting edge over large batches, and the 39 mm collar fixes its position.

Benefits

• Guiding length of 45 mm, long design
• Ground guiding bore of 25 mm within the tolerances of DIN 172
• All-round collar of 39 mm diameter and 5.0 mm height acting as a stop
• Press fit of 35 mm outside diameter in the holder of the jig
• Hardened case-hardening steel at 740 ± 80 HV 10 with a ground surface
• Form A design of DIN 172 with the bore rounded on one side, on the side of the collar

Applications

It is used wherever holes of 25 mm have to be produced without centre punching and without wandering, for example in jigs for series parts, in assembly gauges or in prototype work.

Standard and material

The basis is DIN 172, form A, with a guiding bore of 25 mm. In form A the bore is rounded only on the side of the collar. The material is case-hardening steel, hardened to 740 ± 80 HV 10 and ground afterwards.